Both Site Users and Account Users can be given rights and privileges specific to that site. Click on a user to view their permissions. Then, click on the Change Permissions button to modify their permissions. The permissions give flexibility for different people to have different permissions. These permissions mean that a user:

Can view pages

Can edit pages

Can administer pages, including add, move and delete

Can manage site users

Can update the site settings

And can update the site theme

Permissions for a Site User can be granted from within the customer's site.